Head bolts Comparison - 16v vs 20v.

[blair]

Its all in the title.

I am bolting a 20v bottom end to a bigport 16 head.

And, after a bit of a read, the studs ARE different, but how?

i.e. which ones should i bloody order! haha

cheers guys

[Sam-Q]

a 16v uses 5 short and 5 long bolts,

a 20V uses 10 of the longer bolts

[blair]

Mint. is it the head or the block that determines the bolt lenths?

i.e. do half thread further into the block on a 16v, or is it because of the head design that 5 need to stick out further?

:) cheers as always sam!

[Sam-Q]

it's the head that does, apparently it's is possible to get the 20V kit now, however if you can't I can give the part numbers for each individual component needed for the 20V head.

[blair]

Well, 16v kit it is then!

wealth of info sam, ta

[Sam-Q]

whoa, nah you need the 20V head with the 20V head, it's the head that determines it, that part of all the A blocks are identical. Find out if they sell the 20V kit now and post back here. I will give you those part numbers should you need it

[blair]

Re-read my first post sam, i have a 16v BIGPORT head.

on a 20v SILVERTOP bottom end :)

lolz!

[Sam-Q]

yep my bad, as you where

[H8CHIR6KU]

yeah confused me too. mostly because you bolt the head to the bottom end and not the other way around

[Oly AE86]

If you want ARP Bolts, Road and Track has 20V kits as well as the common 16V kit. Paid $240 for my 20V kit delivered, 16V is a similar price.

[blair]

Are there any other cheaper bolts lol?

I'm barely paying 240 for all the rest of the rebuild parts for fucks sake!

[DX20VT]

What about genuine Toyota bolts?
I use std Toyota ones in my 440hp 7AGTE. But only use them once and throw them away.
But I only pay about $22 for a set so I can.

[Sam-Q]

I agree with the above well the first part anyway. I thought it was proven Toyota bolts are not torque to yeild which means they can be reused

[DX20VT]

I agree with the above well the first part anyway. I thought it was proven Toyota bolts are not torque to yeild which means they can be reused

There is a measurement in the manual to measuer the length of them and if they are not stretched they can be re-used,
but at that price a set and that I dont strip my motor that often, i choose not to.

[Sam-Q]

fair enough, you do get a lot of uses out of them though.